New User -PDF File size reduction

Zaythe · 12-29-2010, 02:19 PM

Hi all....I am a new user of Calibre as I just got iPad.....My question is this....I have a large selection of technical manuals in PDF format and individually some of them are 100-200Mb.....Are there some optimisation settings for either just reducing the size or converting to ePub? It's the size that's a killer.

Any guidance would be appreciated.

Regards

John

daffy4u · 12-29-2010, 02:36 PM

I don't have an answer to your question in regards to Calibre but I do use some software called PDF Shrink 4.5 to reduce the the size of PDFs I make for work and sometimes have to email. There is a free trial is you want to test it out.

itimpi · 12-29-2010, 03:02 PM

In my experience PDF files that are that large tend to have complex layout that does not convert well. Alternatively they have a lot of graphics and they will be large regardless of the format.

With an iPad I suspect that you will be best off keeping them in PDF format. The form factor is large enough that you can normally get away without converting to a reflowable format such as ePub. You may find it worth investing in an iPad app such as Goodreader that specialises in PDF handling.

Lady Fitzgerald · 12-29-2010, 08:17 PM

I've used Adobe Acrobat 9 to reduce PDFs with varying results. Sometimes, the file can be reduced without loss of quality but other times, parts get corrupted. Before trying to reduce your files, make a copy of the original and work with that in case things don't work out.

12-29-2010, 02:19 PM	#1
Zaythe Junior Member Posts: 1 Karma: 10 Join Date: Dec 2010 Device: IPad	New User -PDF File size reduction Hi all....I am a new user of Calibre as I just got iPad.....My question is this....I have a large selection of technical manuals in PDF format and individually some of them are 100-200Mb.....Are there some optimisation settings for either just reducing the size or converting to ePub? It's the size that's a killer. Any guidance would be appreciated. Regards John

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12-29-2010, 02:36 PM	#2
daffy4u I'm Super Kindle-icious Posts: 6,734 Karma: 2434103 Join Date: Apr 2008 Location: Long Drive, Calinadia Candafornia Device: KDXG, KT, Oasis	I don't have an answer to your question in regards to Calibre but I do use some software called PDF Shrink 4.5 to reduce the the size of PDFs I make for work and sometimes have to email. There is a free trial is you want to test it out.

12-29-2010, 03:02 PM	#3
itimpi Wizard Posts: 4,553 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	In my experience PDF files that are that large tend to have complex layout that does not convert well. Alternatively they have a lot of graphics and they will be large regardless of the format. With an iPad I suspect that you will be best off keeping them in PDF format. The form factor is large enough that you can normally get away without converting to a reflowable format such as ePub. You may find it worth investing in an iPad app such as Goodreader that specialises in PDF handling.

12-29-2010, 08:17 PM	#4
Lady Fitzgerald Wizard Posts: 2,013 Karma: 251649 Join Date: Apr 2010 Location: Tempe, AZ, USA, Earth Device: JetBook Lite (away from home) + 1 spare, 32" TV (at home)	I've used Adobe Acrobat 9 to reduce PDFs with varying results. Sometimes, the file can be reduced without loss of quality but other times, parts get corrupted. Before trying to reduce your files, make a copy of the original and work with that in case things don't work out.

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